Trabalhos Acadêmicos
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Item Associação da força muscular e corrida de alta velocidade com a lesão muscular de isquiossurais em atletas de futebol profissional(Faculdade Ciências Médicas de Minas Gerais, 2020-12-18) Oliveira Júnior, Otaviano de; Bittencourt, Natalia Franco Netto; Leopoldino, Amanda Aparecida OliveiraBackground: Hamstring muscle injury (HMI) is the most incident injury in soccer and many risk factors are studied in the literature, the most recognized being the previous muscle injury and the increased age of the athlete. The multifactorial nature of the variables involved and their interrelations at different times of the season is a matter of controversy. Objective: Conduct three studies in elite male professional soccer players from a Brazilian club, the main one being to verify if there is a difference in muscle strength, age, history of previous HMI, ankle sprain, knee anterior cruciate ligament (ACL) injury, performance position in the field, amplitude of ankle dorsiflexion and distance covered at high speed, that is, ≥ 19.8 km/h (high-speed running, HIR) among athletes who had HMI and athletes without muscle injury during one season. The second would be to test the reliability between two instruments with different load analysis mechanisms, either by GPS or by video analysis, relating results of total distance covered and HIR during official matches. Finally, establish the profile of muscle injuries; investigate the severity, the muscle group, the position that the athlete plays and the time of absence in the seasons from 2011 to 2019. Methods: The first study is observational and retrospective with 34 athletes, excluding goalkeepers, for 12 consecutive months. The second is a methodological study with data from 35 male professional soccer athletes (102 individual analyzes) collected in official matches. The third study was observational, including 89 athletes with participation in official matches and training for nine seasons. Results: It was found nine HMI (13.2%), with a positive correlation between athletes with previous HMI (p = 0.011); in the group of lower limbs with higher levels of flexor fatigue in the isokinetic (p = 0.027) and lower values of ankle dorsiflexion (p = 0.017). There was no difference in the performance of the average HIR used as a reference for the demand of athletes with and without injury, as well as for the other variables of strength, age, field position, previous ACL injury and ankle sprain. In the second study, there was good agreement in the comparison of the two systems designed to analyze the demands of total distance covered in professional soccer. In the third study, occurred most muscle injuries in four groups: HMI (36.7%), adductors (22%), calf (21%) and quadriceps (17.3%), with greater incidence of quadriceps injuries in training, a tendency to decrease the incidence of adductor injuries and an increase in HMI during the seasons from 2011 to 2019. xiii Conclusion: The study demonstrates results applied to the practical reality of professional soccer in an elite club in Brazil and a path for future studies that can analyze the interrelationship between the variables of capacity and demand in soccer, as well as helping clubs in the preventive planning of these injuries.